盲巷通风——这在煤矿、金属矿、铁路燧道等掘进中,都要遇到,而且是必需解决的问题,目前在很多地区,由于单头掘进,在爆破之后,有毒的炮烟排不出来,大大影响了生产的进度,甚至威胁工人生命的安全。我们在学校的大爆破巷道掘进中,同样遇到这个严重的问题。 Blind lane ventilation - which is encountered in coal mines, metal mines, rail tunneling and other tunneling problems, and is an issue that must be solved. In many areas, due to the single-head driving, after the blasting, Not out, greatly affected the progress of production, and even threatened the safety of workers' lives. We also encountered this grave problem in the tunneling of big blasting schools in our school.